Effects on the proton production from explosions of hydrogen clusters subjected to intense femtosecond laser fields
文献类型：期刊论文
| 作者 | Chen Guanglong ; Wang Cheng ; Lu Haiyang ; Li Shaohui ; Liu JS(刘建胜) ; Ni GQ(倪国权) ; Li RX(李儒新) ; Xu ZZ(徐至展) |
| 刊名 | j. phys. b-at. mol. opt. phys.
 |
| 出版日期 | 2007 |
| 卷号 | 40期号:3页码:445 |
| 关键词 | Proton production Intense laser pulse Liquid nitrogen temperature Proton energy distributions |
| ISSN号 | 0953-4075 |
| 中文摘要 | the dependence of the maximum and average energies of protons, which were produced in the interaction of an intense laser pulse (similar to 1 x 10(16) w cm(-2), 65 fs) with hydrogen clusters in a gas jet backed up to 80 bar at liquid nitrogen temperature (similar to 80 k), on the backing pressure has been studied. the general trend of the proton energy dependence on the square of the average cluster radius, which is determined by a calibrated rayleigh scattering measurement, is similar to that described by theory under the single size approximation. calculations are made to fit the experimental results under a simplified model by taking into account both a log-normal cluster size distribution and the laser intensity attenuation in the interaction volume. a very good agreement between the experimental proton energy spectra and the calculations is obtained in the high- energy part of the proton energy distributions, but a discrepancy of the fits is revealed in the low-energy part at higher backing pressures which are associated with denser flows. a possible mechanism which would be responsible for this discrepancy is discussed. finally, from the fits, a variation of the cluster size distributions was revealed to be dependent on the gas backing pressure as well as on the evolving time of the gas flow of clusters. |
| 收录类别 | EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000243927700003 |
| 公开日期 | 2009-09-18 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/942]  |
| 专题 | 上海光学精密机械研究所_强场激光物理国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen Guanglong,Wang Cheng,Lu Haiyang,et al. Effects on the proton production from explosions of hydrogen clusters subjected to intense femtosecond laser fields[J]. j. phys. b-at. mol. opt. phys.,2007,40(3):445, 461. |
| APA | Chen Guanglong.,Wang Cheng.,Lu Haiyang.,Li Shaohui.,刘建胜.,...&徐至展.(2007).Effects on the proton production from explosions of hydrogen clusters subjected to intense femtosecond laser fields.j. phys. b-at. mol. opt. phys.,40(3),445. |
| MLA | Chen Guanglong,et al."Effects on the proton production from explosions of hydrogen clusters subjected to intense femtosecond laser fields".j. phys. b-at. mol. opt. phys. 40.3(2007):445. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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